Permille logo
Permille Ratios Out Of 1,000

Calculator

Calculate Any Value After A Permille Decrease

Decrease a value by a chosen permille rate and see the reduction amount, final value, and interactive before/after visual.

Formula: new value = base × (1 - permille / 1000)

Permille Decrease Calculator

Apply a rate to your starting value and inspect the change with an interactive before/after visual.

This calculator is fixed to decrease mode. Enter a non-negative rate.

Hover or tap a bar to highlight it and inspect values.

Direction

-

Rate applied

-

Change amount

-

Starting value

-

New value

-

What Your Result Means

Permille is a precision-friendly way to represent ratios out of 1,000. Use it when percent feels too coarse or when per-thousand language is standard for your topic.

FAQ

  • Can I decrease by more than 1000‰?
    You can enter it, but rates above 1000‰ reduce more than the full starting value and can produce negative results.
  • Why use permille for decreases?
    Permille is useful for small relative drops where percent can feel too coarse.
All calculators Visual stories Specific answer pages